Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

6. Proteins

Enzymes and Protein Binding

Cell Biology

6. Proteins

Enzymes and Protein Binding

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Multiple Choice

The region of a molecule that an antibody binds is called what?

Antigen

Epitope

Ligand

Substrate

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Verified step by step guidance

Understand the context: Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Identify the key term: The specific part of the antigen that is recognized and bound by an antibody is called the 'epitope'.

Differentiate between terms: An 'antigen' is any substance that causes your immune system to produce antibodies against it. A 'ligand' is a molecule that binds to another (usually larger) molecule. A 'substrate' is a substance on which an enzyme acts.

Clarify the concept: The 'epitope' is a small, specific region on the antigen that is recognized by the antibody. It is sometimes referred to as the 'antigenic determinant'.

Conclude with the correct term: Therefore, the region of a molecule that an antibody binds is specifically called the 'epitope'.